Trimble R750 GNSS Receiver User Guide

Trimble R750 GNSS Receiver

Product Information

Specifications:

• Model: R750 GNSS Receiver
• Ports: USB-C, Ethernet, Serial COM1, Serial COM2, Serial COM3/CAN, 1PPS
• Antennas: GNSS antenna, UHF radio antenna
• Power Source: Internal battery, External power

Product Usage Instructions

Install the Nano-SIM Card (Optional)

1. Ensure the receiver is turned off.
2. Remove the cover on the bottom of the receiver to access the SIM card slot.
3. Insert the nano-SIM card.
4. Reattach the cover over the SIM card slot.

Charge the Internal Battery

1. Connect the USB-C PD power adapter and cable to the USB-C port on the receiver.
2. The receiver display shows the current charge status.
3. It takes up to 5.5 hours to fully charge the battery.

Activate Warranties, Install Options, and Radio Settings, and Update the Receiver Firmware

1. Install Trimble Installation Manager from www.trimble.com/installationmanager.
2. Connect the receiver to your computer using a USB-C or serial cable.
3. Start Trimble Installation Manager and select the Receiver tab.
4. Click Connect, select COMx Trimble USB, and click OK.

Connect the GNSS Antenna
Connect the GNSS antenna cable to the TNC connector on the receiver back panel. Do not overtighten.

Connect the Radio Antenna
Connect the UHF radio antenna or external UHF antenna cable to the RP-TNC connector on the receiver back panel. Do not overtighten.

Connect the Ethernet Cable

1. Connect a Trimble DB26 adapter with an RJ45 socket to the DB26 connector on the receiver rear panel.
2. Connect an RJ45 cable to the socket on the DB26 adapter.

Connect to the Receiver Web Interface

1. Access the receiver web interface.
2. Connect your device to the R750 WiFi access point using either option a or b.

FAQ:

• Q: How can I check the battery status of the R750 receiver?
  A: You can check the battery status on the receiver display or through the web interface when connected.

• Q: Can I use third-party accessories with the R750 GNSS Receiver?
  A: It is recommended to use accessories provided by Trimble to ensure compatibility and optimal performance.

OVERVIEW

CAUTION – Before operating this product, please read the safety warnings and information. Go to https://receiverhelp.trimble.com/r750-gnss/safety- info_r750.html.

ACCESSORIES AVAILABLE FOR PURCHASE

For a full list of accessories, please contact your Trimble dealer or go to https://receiverhelp.trimble.com/r750-gnss/accessories_r750.html.

AC power kits

• International (P/N GNSS-AC-INT)
• China (P/N GNSS-AC-CHN)
• Japan (P/N GNSS-AC-JPN)
• USB-C Wall charger with cable (P/N GNSS-AC-USB)

Cables
Recommended cable combinations for LEMO and DB26 connectors on the receiver using a DC power source

• LEMO: for external lead acid battery:

  • P/N 46125-20: Cable – Power, 3 m (10 ft), LEMO 0S7P(M) to battery clips

• LEMO: combination 3.3 m, external lead acid battery, COM1:

  • P/N 59044-10: Cable – Data/Power, 1.5 m, DB9(F) to LEMO 0S7P(M) / SAE
  • P/N 83223-02-HH: Cable – Power, 1.8 m, SAE to battery clips

• DB26: combination 2.3 m, external lead acid battery, COM 1/2/3/4, ETH, 1PPS:

  • P/N 78235-10: Cable – Data/Power, 0.5 m, DB26(F) to DB9(F)/DB9(M)/RJ45(F)/BNC/SAE
  • P/N 83223-02-HH: Cable – Power, 1.8 m, SAE to battery clips

• 2.7 m DC extension cable for cable options #2 and #3 above:

  • P/N 51862-00-HH: Cable – SAE to SAE, power cable, 2.7 m (9 ft)

• USB-C: cable for external 15 V USB-PD powerpack or wall charger

  • P/N 121920-01-HH: Cable – 2 m, USB-C to USB-C power/data, R750
    R750 receiver to an external UHF radio

• LEMO: For external TDL450 radio on COM1 – Cable ships with TDL450 kits:

  • P/N 130918: TDL450B radio, LEMO 0S7P(M) to LEMO 1S5P(M)
  • P/N 66656-10: TDL450H radio, LEMO 0S7P(M) to LEMO 1S5P(M) and SAE power

• LEMO: To connect COM1 with third-party radio cables:

  • P/N 59044-10: Data/Power, 1.5 m, DB9(F) to LEMO 0S7P(M) to SAE.

UPGRADES AVAILABLE FOR PURCHASE

For more information, please contact your Trimble dealer or go to https://receiverhelp.trimble.com/r750-gnss/upgrades_r750.html.

• Precise Rover with Base backup
• RTK Base
• Rover 10/2 Precision upgrade
• Rover 10/10 Precision upgrade
• Programmatic Interface

INSTALLATION INSTRUCTION

INSTALL THE NANO-SIM CARD (OPTIONAL)

1. Ensure the receiver is turned off.
2. Remove the cover on the bottom of the receiver to access the SIM card slot.
3. Insert the nano-SIM card.
4. Reattach the cover over the SIM card slot.
5. After completing the activation in Step 3, the nano‑SIM card can be enabled.
   • . Select LTE Modem. Enter the APN and enable.

CHARGE THE INTERNAL BATTERY

1. Connect the USB-C PD power adapter (P/N 121928‑01) and cable (P/N 121920-01) to the USB-C port on the receiver.
2. The receiver display shows the current charge status.
3. It takes up to 5.5 hours to fully charge the battery.
   When the R750 receiver with the UHF radio is transmitting at 2 W, the battery lasts for about 4 hours at room temperature.
   Adding a USB-PD powerpack (30,000 mAh) to a fully charged internal battery provides about 13.9 hours of power.
   TIP – Alternatively, use the Trimble power supply (P/N 107000) with a DB26 adapter (e.g. P/N 57168) or a lemo cable with DC input (e.g. P/N 59044-10 or 59044) to charge the internal battery.

ACTIVATE WARRANTIES, INSTALL OPTIONS AND RADIO SETTINGS, AND UPDATE THE RECEIVER FIRMWARE

1. Install Trimble Installation Manager.
   Go to www.trimble.com/installationmanager.

2. Connect the receiver to your computer using a USB-C or serial cable.

3. Start Trimble Installation Manager.

4. Select the Receiver tab and click Connect.

5. Select COMx Trimble USB from the list of available ports and click OK.
   For information on updating the receiver firmware, go to https://receiverhelp.trimble.com/r750-gnss/firmware_updating.html.

CONNECT THE GNSS ANTENNA
Connect the GNSS antenna cable (e.g. P/N 58957‑02) to the TNC connector on the receiver back panel. Do not overtighten.

CONNECT THE RADIO ANTENNA
Connect the UHF radio antenna (P/N 123588) or external UHF antenna cable to the RP-TNC connector on the receiver back panel. Do not overtighten.

NOTE – If you are using a standard polarity 450 MHz external UHF antenna cable, a reverse polarity TNC adapter (P/N 119128) is required. Do not use an adapter with a standard polarity whip antenna (e.g. P/N 44085‑60) as this could negatively affect the performance of the radio.

CONNECT THE ETHERNET CABLE

1. Connect a Trimble DB26 adapter with an RJ45 socket (e.g. P/N 57168), to the DB26 connector on the receiver rear panel.
2. Connect an RJ45 cable to the socket on the DB26 adapter.
3. to find the IP address on the front screen.

CONNECT TO THE RECEIVER WEB INTERFACE

1. .

2. Use option a or b to connect your device to the R750 WiFi access point:

   • a. . Scan the QR code.
     The SSID (network name) and password are displayed on your smartphone.

   • b. Find the receiver access point SSID under the available Wi-Fi networks on your smartphone or computer.
     The default SSID is Trimble GNSS xxxx, where xxxx represents the last four digits of the receiver serial number.

3. Tap Connect to connect to the receiver access point.
   The default network password is abcdeabcde.

4. On your smartphone or computer:

   • a. Open a web browser and enter the IP address: http://192.168.142.1
   • b. Log into the web interface. The default login details are:
   • User Name: admin
   • Password: password

SCREENS

The screens that appear depend on the configuration and option settings of your receiver. Refer to https://receiverhelp.trimble.com/r750-gnss /ch_receiver-screens.html.

Home screen
To go back to the Home screen, keep pressing .

1. Number of tracked satellites
2. Operation mode
3. Base station name and code
4. Internal battery state
5. Position solution
6. Horizontal precision estimate
7. Vertical precision estimate
8. Wi-Fi signal strength (RSSI):

• = Internet connection (Wi-Fi).
  A = Access Point mode enabled.

  9. UHF transmit frequency/channel
  10. Output correction type
  11. TX flashes when corrections are transmitted
  12. LTE signal strength (RSSI)
  13. • = Internet connection (LTE)
  14. Number of tracked GPS satellites (G)
  15. Number of tracked GLONASS satellites (R)
  16. Number of tracked BeiDou satellites (B)
  17. Number of tracked Galileo satellites (E)
  18. Number of tracked QZSS satellites (Q)
  19. Wired Ethernet connection mode
  20. Available internal memory (Logging)

Status screens
Briefly press and then .

Configuration screens
Briefly press and then .
To open a menu, press .
To change an option within a menu, highlight the option and press . Press to confirm.

REGULATORY INFORMATION
For full legal and regulatory information, go to https://receiverhelp.trimble.com/r750-gnss/compliance-notices_r750.html.

FURTHER INFORMATION
For more information about using the receiver, go to https://receiverhelp.trimble.com/r750-gnss. Help is also available in the receiver web interface.

© 2021–2024, Trimble Inc. All rights reserved. Trimble, and the Globe & Triangle logo are trademarks of Trimble, registered in the United States and in other countries. All other trademarks are the property of their respective owners. Trimble Inc., 10368 Westmoor Drive, Westminster CO 80021, USA.
P/N 127943, Revision F, May 2024. Doc ID 971194158.

trimble.com

References

• R750 Help, 6.26 and 5.66
• Trimble Advanced Industry Solutions & Integrated Technology

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